Paper towel holder



FIG. 1 is a left side elevational view of a paper towel holder showing my design, the right side being substantially a mirror image thereof;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof.

The undisclosed rear is plain and unornamented. 

The ornamental design for a paper towel holder, as shown and described. 